In the early 6th century, Buthrotum became the seat of a bishopric and new construction included the Buthrotum baptistery, one of the largest such paleo Christian buildings of its type, and a basilica. Butrint (Buthrotum) was an ancient Greek and later Roman city and bishopric in Epirus. Located in Albania. Buthrotum was a city of the Epirote tribe of the Chaonians, later a Roman colony and a bishopric. It is part of the Butrint National Park.